CN113719570A - High-tightness nitrogen spring and preparation method of embedded sealing sleeve - Google Patents
High-tightness nitrogen spring and preparation method of embedded sealing sleeve Download PDFInfo
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- CN113719570A CN113719570A CN202111018164.3A CN202111018164A CN113719570A CN 113719570 A CN113719570 A CN 113719570A CN 202111018164 A CN202111018164 A CN 202111018164A CN 113719570 A CN113719570 A CN 113719570A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to the technical field of nitrogen springs, in particular to a high-tightness nitrogen spring and a preparation method of an embedded sealing sleeve. It includes the cylinder body, the inside sliding connection of cylinder body has the piston rod, the cross-section of piston rod is T type structure, the inside top of cylinder body is equipped with the stopper, embedded seal cover has been cup jointed on the bottom surface of piston rod, embedded seal cover is located the below of stopper, wrap up the seal cover surface of preparation through using the sealing glue solution, the glue solution infiltration of hypertonicity is inside the seal cover, can improve the leakproofness of seal cover, further strengthen to the intensity of seal cover simultaneously, because the natural rubber that elasticity is high has been added in the glue solution, can make the sealing glue solution after the solidification have certain elasticity, sealed use of gluing has been ensured.
Description
Technical Field
The invention relates to the technical field of nitrogen springs, in particular to a high-tightness nitrogen spring and a preparation method of an embedded sealing sleeve.
Background
The existing nitrogen gas spring mainly comprises a nitrogen cylinder and a plunger piston in sliding fit with the nitrogen cylinder, and the plunger piston slides relative to the nitrogen cylinder by inflating the nitrogen cylinder through an inflating assembly. For improving nitrogen gas spring leakproofness, can add the sealing washer in nitrogen gas spring structure and seal to prevent the gas loss in the nitrogen gas cylinder, current sealing washer intensity is relatively poor, uses the back repeatedly when nitrogen gas spring, can cause wearing and tearing to the sealing washer, thereby influences the leakproofness, and the sealing washer gas tightness is relatively poor simultaneously inferior, is unfavorable for being used for nitrogen gas spring to use.
Disclosure of Invention
The invention aims to provide a high-tightness nitrogen spring and a preparation method of an embedded sealing sleeve, so as to solve the problems in the background technology.
In order to achieve the above purpose, in one aspect, the invention provides a high-tightness nitrogen spring, which comprises a cylinder body, wherein a piston rod is connected inside the cylinder body in a sliding manner, the cross section of the piston rod is of a T-shaped structure, a limiting block is arranged at the top end inside the cylinder body, an embedded sealing sleeve is sleeved on the bottom end surface of the piston rod, and the embedded sealing sleeve is located below the limiting block.
On the other hand, the invention provides a preparation method of an embedded sealing sleeve, which comprises the following steps:
s1.1, adding polyurethane resin and hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
s1.2, adding a cross-linking agent, a reinforcing agent and a coloring agent, stirring and mixing to obtain a mixed solution;
s1.3, adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
s1.4, preheating the mold to 190-;
s1.5, adding the prepared cavity sealing sleeve into the sealing glue solution, soaking for 0.5-1h, and finally drying.
As a further improvement of the technical scheme, the embedded sealing sleeve comprises the following raw materials in proportion: 30-40% of polyurethane resin, 20-30% of hydrogenated nitrile rubber, 1-5% of cross-linking agent, 15-20% of reinforcing agent, 0.1-3% of coloring agent and 0.1-2% of vulcanizing agent.
As a further improvement of the technical scheme, the crosslinking agent is at least one selected from dicumyl peroxide, 3-dichloro-4, 4-diaminodiphenylmethane, trimethylolpropane, 1, 4-cyclohexanedimethanol and 1, 4-butanediol.
As a further improvement of the technical scheme, the reinforcing agent is one or more of zinc oxide, talcum powder, diatomite, kaolin and calcium carbonate, and is used for improving the strength of the sealing sleeve.
As a further improvement of the technical scheme, the colorant is selected from carbon black and is used for changing the color of the sealing sleeve and has a reinforcing effect.
As a further improvement of the technical scheme, the sealing glue solution comprises the following raw materials: 47-55% of waterborne epoxy resin, 17-23% of natural rubber, 20-30% of solvent, 1-5% of surfactant and 15-20% of filler, wherein the preparation method of the sealing glue solution comprises the following steps:
s2.1, adding the natural rubber into a reaction kettle, heating to 150 ℃ and melting at 180 ℃, then adding the water-based epoxy resin, and stirring for 0.5-2h to obtain a mixed solution;
and S2.2, adding the surfactant and the filler into the mixed solution, adding the dispersant, mixing and stirring for 0.5-1h, and finally adding the mixed solution into the solvent for dilution to obtain the nano-composite material.
As a further improvement of the technical scheme, the solvent is at least one selected from ethyl acetate, 1, 4-butanediol diglycidyl ether and dibutyl phthalate.
As a further improvement of the technical scheme, the surfactant is one or a mixture of more of fatty alcohol-polyoxyethylene ether and phosphate compounds and is used for improving the permeability of the sealing glue solution.
As a further improvement of the technical scheme, the filler is selected from one or more of talcum powder, limestone, carbon fiber, wood powder and cotton dust, and is used for improving the strength of the sealing glue solution.
Compared with the prior art, the invention has the beneficial effects that:
according to the high-tightness nitrogen spring and the preparation method of the embedded sealing sleeve, the surface of the prepared sealing sleeve is wrapped by using the sealing glue solution, the high-permeability glue solution permeates into the sealing sleeve, the sealing performance of the sealing sleeve can be improved, the strength of the sealing sleeve is further enhanced, and the high-elasticity natural rubber is added into the glue solution, so that the cured sealing glue solution has certain elasticity, and the use of the sealing glue is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an overall flow diagram of the present invention.
The various reference numbers in the figures mean:
100. a cylinder body; 101. a piston rod; 102. a limiting block; 110. a sealing sleeve is embedded.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1A high-tightness Nitrogen gas spring
The embodiment provides a high-tightness nitrogen spring, as shown in fig. 1, the nitrogen spring comprises a cylinder body 100, a piston rod 101 is slidably connected inside the cylinder body 100, the cross section of the piston rod 101 is of a T-shaped structure, a limiting block 102 is arranged at the top end inside the cylinder body 100, an embedded sealing sleeve 110 is sleeved on the surface of the bottom end of the piston rod 101, the embedded sealing sleeve 110 is located below the limiting block 102, and the tightness of the nitrogen spring during use can be improved by adding the embedded sealing sleeve 110 to the piston rod and the cylinder body 100.
Embodiment 2 a method for preparing an embedded seal cartridge, comprising the steps of:
preparation of sealing glue solution
Adding 17% of natural rubber into a reaction kettle, heating to 180 ℃ for melting, then adding 47% of aqueous epoxy resin, and stirring for 0.5-2h to obtain a mixed solution; adding 1% of surfactant and 15% of filler into the mixed solution, adding dispersant, mixing and stirring for 0.5-1h, and finally adding the mixed solution into 20% of solvent for dilution to obtain the water-soluble polyurethane.
Secondly, preparing a sealing sleeve
1. Adding 35% of polyurethane resin and 25% of hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
2. adding 3% of cross-linking agent, 17.5% of reinforcing agent and 2% of coloring agent, stirring and mixing to obtain a mixed solution;
3. adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
4. preheating the mold to 190-;
5. and adding the prepared inner cavity sealing sleeve into the sealing glue solution, soaking for 0.5-1h, and finally drying.
Embodiment 3 a method for preparing an embedded sealing sleeve, comprising the steps of:
preparation of sealing glue solution
Adding 20.5 percent of natural rubber into a reaction kettle, heating to 150 ℃ and melting at 180 ℃, then adding 51 percent of water-based epoxy resin, and stirring for 0.5-2h to obtain a mixed solution; adding 3% of surfactant and 17.5% of filler into the mixed solution, adding dispersant, mixing and stirring for 0.5-1h, and finally adding the mixed solution into 25% of solvent for dilution to obtain the water-soluble polyurethane.
Secondly, preparing a sealing sleeve
1. Adding 35% of polyurethane resin and 25% of hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
2. adding 3% of cross-linking agent, 17.5% of reinforcing agent and 2% of coloring agent, stirring and mixing to obtain a mixed solution;
3. adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
4. preheating the mold to 190-;
5. and adding the prepared inner cavity sealing sleeve into the sealing glue solution, soaking for 0.5-1h, and finally drying.
Embodiment 4 a method for manufacturing an embedded seal cartridge, comprising the steps of:
preparation of sealing glue solution
Adding 23% of natural rubber into a reaction kettle, heating to 180 ℃ for melting, then adding 55% of aqueous epoxy resin, and stirring for 0.5-2h to obtain a mixed solution; adding 5% of surfactant and 20% of filler into the mixed solution, adding dispersant, mixing and stirring for 0.5-1h, and finally adding the mixed solution into 30% of solvent for dilution to obtain the water-soluble polyurethane.
Secondly, preparing a sealing sleeve
1. Adding 35% of polyurethane resin and 25% of hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
2. adding 3% of cross-linking agent, 17.5% of reinforcing agent and 2% of coloring agent, stirring and mixing to obtain a mixed solution;
3. adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
4. preheating the mold to 190-;
5. and adding the prepared inner cavity sealing sleeve into the sealing glue solution, soaking for 0.5-1h, and finally drying.
In the above examples 2 to 4, the crosslinking agent is selected from at least one of dicumyl peroxide, 3-dichloro-4, 4-diaminodiphenylmethane, trimethylolpropane, 1, 4-cyclohexanedimethanol, and 1, 4-butanediol;
the reinforcing agent is selected from one or more of zinc oxide, talcum powder, diatomite, kaolin and calcium carbonate, and is used for improving the strength of the sealing sleeve;
the colorant is selected from carbon black, is used for changing the color of the sealing sleeve and has a reinforcing effect;
the solvent is at least one selected from ethyl acetate, 1, 4-butanediol diglycidyl ether and dibutyl phthalate;
the surfactant is selected from one or more of fatty alcohol-polyoxyethylene ether and phosphate compounds, and is used for improving the permeability of the sealing glue solution;
the filler is one or more selected from talcum powder, limestone, carbon fiber, wood powder and cotton dust, and is used for improving the strength of the sealing glue solution.
The relevant indexes of the embedded sealing sleeve prepared by the invention are shown in table 1:
TABLE 1
As shown in table 1, in examples 2 to 4 of the present invention, the sealing glue solutions prepared in different proportions have good abrasion resistance and notch impact strength after soaking the embedded sealing sleeve, and also have good sealing performance.
Comparative example 1 a method for manufacturing an embedded sealing sleeve, comprising the steps of:
1. adding 35% of polyurethane resin and 25% of hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
2. adding 3% of cross-linking agent, 17.5% of reinforcing agent and 2% of coloring agent, stirring and mixing to obtain a mixed solution;
3. adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
4. preheating the mold to 190-210 ℃, pouring the mixed rubber liquid into the mold, closing the mold for vulcanization, and finally stripping the mold to obtain the embedded sealing sleeve.
Comparative example 2 a method of manufacturing an embedded sealing boot, comprising the steps of:
preparation of sealing glue solution
Adding 20.5 percent of natural rubber into a reaction kettle, heating to 150 ℃ and melting at 180 ℃, then adding 51 percent of water-based epoxy resin, and stirring for 0.5-2h to obtain a mixed solution; adding 17.5% of filler into the mixed solution, adding a dispersant, mixing and stirring for 0.5-1h, and finally adding the mixed solution into 25% of solvent for dilution to obtain the composite material.
Secondly, preparing a sealing sleeve
1. Adding 35% of polyurethane resin and 25% of hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
2. adding 3% of cross-linking agent, 17.5% of reinforcing agent and 2% of coloring agent, stirring and mixing to obtain a mixed solution;
3. adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
4. preheating the mold to 190-;
5. and adding the prepared inner cavity sealing sleeve into the sealing glue solution, soaking for 0.5-1h, and finally drying.
The inner cavity sealing sleeve prepared by the invention has better strength and sealing performance, has a larger relation with the added sealing glue solution, and in order to verify the related technical scheme, the applicant performs the following tests:
comparative examples 1 to 2: by adopting the method of the embodiment 3, under the condition of respectively removing the surfactants in the sealing glue solution and the sealing glue solution, the prepared inner cavity sealing sleeve related indexes are detected, and the specific indexes are shown in table 2:
TABLE 2
| Antiwear Strength (Mpa) | Notched impact strength/MPa | Leakage Rate (%) | |
| Comparative example 1 | 109 | 21 | 1.56 |
| Comparative example 2 | 133 | 35 | 0.73 |
| Example 3 | 167 | 38 | 0.10 |
According to the table 2, the sealing performance and strength of the embedded sealing sleeve are greatly reduced when the sealing glue solution is removed, and the sealing performance and strength of the embedded sealing sleeve are reduced when the surfactant in the sealing glue solution is removed, so that the embedded sealing sleeve is added into the sealing glue solution to be soaked, and is an important factor for changing the strength and the sealing performance of the sealing sleeve.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a high-tightness nitrogen spring, its characterized in that, nitrogen spring includes cylinder body (100), the inside sliding connection of cylinder body (100) has piston rod (101), the cross-section of piston rod (101) is T type structure, the inside top of cylinder body (100) is equipped with stopper (102), embedded seal cover (110) have been cup jointed to the bottom surface of piston rod (101), embedded seal cover (110) are located the below of stopper (102).
2. The preparation method of the embedded sealing sleeve is characterized by comprising the following steps:
s1.1, adding polyurethane resin and hydrogenated nitrile rubber into a mixing roll, heating to 180 ℃ and melting at 230 ℃, then adding a dispersing agent for ultrasonic dispersion, and stirring for 0.5-2h for mixing;
s1.2, adding a cross-linking agent, a reinforcing agent and a coloring agent, stirring and mixing to obtain a mixed solution;
s1.3, adding the prepared mixed solution into a stirring barrel, continuously heating to the temperature of 200-;
s1.4, preheating the mold to 190-;
s1.5, adding the prepared cavity sealing sleeve into the sealing glue solution, soaking for 0.5-1h, and finally drying.
3. The method for preparing an embedded sealing sleeve according to claim 2, characterized in that: the raw material proportion of the embedded sealing sleeve is as follows: 30-40% of polyurethane resin, 20-30% of hydrogenated nitrile rubber, 1-5% of cross-linking agent, 15-20% of reinforcing agent, 0.1-3% of coloring agent and 0.1-2% of vulcanizing agent.
4. The method for preparing an embedded sealing sleeve according to claim 2, characterized in that: the cross-linking agent is at least one selected from dicumyl peroxide, 3-dichloro-4, 4-diaminodiphenylmethane, trimethylolpropane, 1, 4-cyclohexanedimethanol and 1, 4-butanediol.
5. The method for preparing an embedded sealing sleeve according to claim 2, characterized in that: the reinforcing agent is selected from one or more of zinc oxide, talcum powder, diatomite, kaolin and calcium carbonate.
6. The method for preparing an embedded sealing sleeve according to claim 2, characterized in that: the colorant is selected from carbon black.
7. The method for preparing an embedded sealing sleeve according to claim 2, characterized in that: the sealing glue solution comprises the following raw materials: 47-55% of waterborne epoxy resin, 17-23% of natural rubber, 20-30% of solvent, 1-5% of surfactant and 15-20% of filler, wherein the preparation method of the sealing glue solution comprises the following steps:
s2.1, adding the natural rubber into a reaction kettle, heating to 150 ℃ and melting at 180 ℃, then adding the water-based epoxy resin, and stirring for 0.5-2h to obtain a mixed solution;
and S2.2, adding the surfactant and the filler into the mixed solution, adding the dispersant, mixing and stirring for 0.5-1h, and finally adding the mixed solution into the solvent for dilution to obtain the nano-composite material.
8. The method for preparing an embedded sealing sleeve according to claim 7, characterized in that: the solvent is at least one selected from ethyl acetate, 1, 4-butanediol diglycidyl ether and dibutyl phthalate.
9. The method for preparing an embedded sealing sleeve according to claim 7, characterized in that: the surfactant is one or more of fatty alcohol-polyoxyethylene ether and phosphate compounds.
10. The method for preparing an embedded sealing sleeve according to claim 7, characterized in that: the filler is one or more of talcum powder, limestone, carbon fiber, wood powder and cotton dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111018164.3A CN113719570A (en) | 2021-09-01 | 2021-09-01 | High-tightness nitrogen spring and preparation method of embedded sealing sleeve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111018164.3A CN113719570A (en) | 2021-09-01 | 2021-09-01 | High-tightness nitrogen spring and preparation method of embedded sealing sleeve |
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| CN113719570A true CN113719570A (en) | 2021-11-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2017166A6 (en) * | 1989-03-30 | 1991-01-01 | Orive Arana Juan Cruz | Nitrogen-gas spring |
| CN203796834U (en) * | 2013-09-29 | 2014-08-27 | 苏州凯贸铸造工业有限公司 | Nitrogen spring for automobile die |
| CN112196931A (en) * | 2020-10-29 | 2021-01-08 | 东莞市元浩精密机械科技有限公司 | Shock attenuation nitrogen spring for cross country electric vehicle |
| CN213393288U (en) * | 2020-10-20 | 2021-06-08 | 江苏极固精密机械科技有限公司 | Nitrogen spring overtravel safety structure |
| CN213479022U (en) * | 2020-10-19 | 2021-06-18 | 江苏极固精密机械科技有限公司 | Nitrogen spring of balance cylinder |
-
2021
- 2021-09-01 CN CN202111018164.3A patent/CN113719570A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2017166A6 (en) * | 1989-03-30 | 1991-01-01 | Orive Arana Juan Cruz | Nitrogen-gas spring |
| CN203796834U (en) * | 2013-09-29 | 2014-08-27 | 苏州凯贸铸造工业有限公司 | Nitrogen spring for automobile die |
| CN213479022U (en) * | 2020-10-19 | 2021-06-18 | 江苏极固精密机械科技有限公司 | Nitrogen spring of balance cylinder |
| CN213393288U (en) * | 2020-10-20 | 2021-06-08 | 江苏极固精密机械科技有限公司 | Nitrogen spring overtravel safety structure |
| CN112196931A (en) * | 2020-10-29 | 2021-01-08 | 东莞市元浩精密机械科技有限公司 | Shock attenuation nitrogen spring for cross country electric vehicle |
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